I need to find largest fuse downstream of a feeder/breaker. The feeder has branches while each branch has a fuse downstream. Also, how to obtain the minimum SC fault of the ends of a feeder?
I have motor data as magnetizing inductance => 5 pu. I have stator and wound rotor resistance and inductance. All like 0.0x pu.
I need
Rs: Resistance of each stator coil
Lls: Stator leakage inductance
Rr1: Resistance of the rotor windings from stator side.
Llr1: Rotor leakage inductance from...
I'm trying to model 3/C cable in EMTP.
For example this cable https://www.southwire.com/ProductCatalog/XTEInterfaceServlet?contentKey=prodcatsheetB44 .. I can't get the same R, XL, XC in page 2
Is there any reference for modeling 3/C cables?
I have some connected flat cables connected together in series and parallel. What software should be used to get the equivalent RLC parameters of this circuit?
I got the transformer saturation curve from the manufacturer. It shows the excitation current vs the voltage.
Is this current pure magnetizing current or it includes copper & eddy losses? Is this the line current during the test or it is the magnetizing only current?
Based on this file from ABB, We can get the capacitance and inductance parameters of a cable
https://library.e.abb.com/public/321b7c021cb73fefc1257a40004c237c/2012%20XLPE%20Users%20Guide_USA.pdf
I'm confused.
- Per page 21
C = Er/59/ln(r0/ri) = 2.5/59/ln(r0/ri); ro seems straight forward from...
I have a 1750HP IM 13.2kV RPM = 3600 & MVA is 1.424. H=1/2Jw^2/MVA.
I do not know H. I need to get J which is written as J=2H (s).
Anyway to estimate some reasonable value for J?
I have a motor info as
HP 500 , kVA 450, poles 2, kV 4.16, Slip 1.275 RPM 3554, SF 1.15 , FLA 65
PF FL 100% -> 86%
Eff 100% -> 95
Locked Rotor:
%LRC 690%
%PF 19, T = 35% Tmax = 210
Can you please help me with equivalent circuit calculation and provide me with some references to go from...
Can you please advise why some component in ETAP model show in green and others show in orange in edit mode?
I made no change for color preferences i.e. I'm using ETAP default colors.
I have a delta/wye transformer. I want to get transformer pu copper losses.
The transformer is 60MVA, 25/13.8 y/d, Z% = 10%, X/R = 23.5
Zb = V2/S = 13.8*13.8/S = 13.8*13.8/60 = 3.174 ohms
Xactual = Zb*Zpu = 0.3174 ohms
R = X / (X/R) = 0.013506383 ohms
I = V/Z = 13.8/SQRT(3)/SQRT(0.013506383*...
Can you please help model this transformer in PSCAD?
A single phase 10 kVA 20kV/110V 50 Hz transformer. primary resistor = 5000 ohms * primary inductance = 10000 H* secondary resistor = 0.2 ohms * secondary inductance = 10 H* Exciting Current 0.5%. I need to compute PU leakage reactance X12 (or...
